US Bridges

Lytle Road over Shiawassee River

Fair

Shiawassee County, Michigan · 1.5 Miles East of Corunna · Structure no. 000000000009795

Built
1964
61 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
186 ft
3 main spans
Daily traffic
1,304
2022 count
Owner
County
County Highway Agency

About this bridge

Lytle Road over Shiawassee River is a steel stringer/multi-beam or girder carrying Lytle Road over Shiawassee River in Shiawassee County, Michigan. It was built in 1964, so it is 61 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,304 vehicles a day, roughly 10% of them trucks, projected to reach 1,938 by 2042. The structure is 186 ft (56.7 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesLytle Road
CrossesShiawassee River
Location1.5 Miles East of Corunna
RouteCounty Highway 0
CountyShiawassee County
StateMichigan
Coordinates42.97699, -84.07236
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99.3 US tons
Inventory rating59.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length186 ft (56.7 m)
Longest span60 ft (18.2 m)
Deck width31 ft (9.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,304 (2022)
Projected traffic1,938 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lytle Road over Shiawassee River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Lytle Road over Shiawassee River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does Lytle Road over Shiawassee River carry?

About 1,304 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Lytle Road over Shiawassee River?

The structure is 186 ft (56.7 m) long with a longest span of 60 ft (18.2 m) and a deck 31 ft wide.

Who owns Lytle Road over Shiawassee River?

It is owned by the County Highway Agency.